$bgcolor:red;
.header-top {
    width: 100%;
    height: 80px;
    background-color: $bgcolor;
    >.header-top-center {
        width: 1200px;
        margin: 0 auto;
        position: relative;
        >.header-close {
            position: absolute;
            right: 5px;
            top: 4px;
            cursor: pointer;
            &:hover {
                background-color: $bgcolor;
            }
        }
    }
}